A fluoride ion-mediated continuous etching–redeposition strategy to synthesize Si nanocomposites with appropriate SiO2 coating layers for Li-ion batteries. Issue 88 (3rd October 2018)

• Record Type: Journal Article
• Authors: Fan, Xiaoming; Zhao, Junhao; Yang, Zeheng; Zhang, Weixin
• Is Part Of: Chemical communications. Volume 54:Issue 88(2018)
• Page Start: 12447
• Page End: 12450
• Publication Date: 2018-10-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc05034a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A silicon core in a silica shell: an etching–redeposition strategy to synthesize silicon nanocomposites with high rate capability and cycling stability in LIBs. Abstract : Silicon nanocomposites with surface coating have been promising candidates for high-performance anodes in Li-ion batteries. Here we report a simple yet effective way to synthesize Si@SiO2 nanocomposites with amorphous SiO2 coating through a fluoride ion-mediated continuous etching–redeposition process. The Si@SiO2 nanocomposite anode exhibits significantly improved lithium storage properties, with a reversible capacity of 1356 mA h g −1 at 2.1 A g −1 for 300 cycles.